Granted Patent
Utility
US 5,263,218 · App. 08/023,344
Vibrating toothbrush using a magnetic driver
Inventors:
David Giuliani, Roy W. Martin, Rodger H. Rosenbaum
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Feb 25, 1993
Inventors
David Giuliani
Roy W. Martin
Rodger H. Rosenbaum
Assignee (at issue)
Gemtech
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.